There are 25 prime numbers less than 100. Some of these are two-digit prime numbers. What fraction of two-digit prime numbers contain the digit 9? Express this fraction in lowest terms.

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Teefour asked Apr 3, 2023

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There are 25 prime numbers less than 100.

Some of these are two-digit prime numbers.
What fraction of two-digit prime numbers contain the digit 9?
Express this fraction in lowest terms.

Mathematics
high-school

Teefour asked Apr 3, 2023

by Teefour

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24 votes

Answer:

6/25.

Explanation:

They are 19, 29, 59, 79, 89 and 97.

A total of 6.

So the required fraction is 6/25.

Djordje Kujundzic answered Apr 6, 2023

by Djordje Kujundzic

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